Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Just formed a problem :(

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Old 04-22-2010, 07:43 PM
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Just formed a problem :(

I dont know what just happened. car was hitting target boost of 16-17 just fine, now when it hits 14psi, in any gear, the car stalls. wont hold above 14. did i just blow my td04??? or could it be something else??
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Old 04-22-2010, 07:52 PM
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well if you have an sti.. you shouldn't have a td04 in it. maybe a bad boost control solenoid?

Last edited by xhengmanx; 04-22-2010 at 08:37 PM.
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Old 04-22-2010, 08:21 PM
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Originally Posted by xhengmanx
well if you have an sti.. you should have a td04 in it. maybe a bad boost control solenoid?
You mean shouldn't

04 Sti's came with a vf39 turbo
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Old 04-22-2010, 08:31 PM
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Originally Posted by soggynoodles
You mean shouldn't

04 Sti's came with a vf39 turbo
are you tuned? if so, which boost controller?
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Old 04-22-2010, 08:37 PM
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corrected!
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Old 04-23-2010, 12:32 PM
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Unplug the battery and reset. this sometimes works... GL
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Old 04-23-2010, 04:54 PM
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im going to say theres a tear in a hose.you build boost,tear opens up and problems start.check ALL vaccum lines and couplers for holes/tears.
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Old 04-25-2010, 11:15 PM
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well, after a trip out of town with the tank of gas that i filled up locally (when the problem started) and having to refill out of town, the car seems to be running 17psi again in every gear without any hesitation. seems i've picked up some bad gas at my local chevron. (and yes.. i DID put 91 oct. in it) thanks for your guy's time and help
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